Resolve "Process urls with spaces in all markdown processing"

lib/banzai/filter/spaced_link_filter.rb

@@ -10,11 +10,12 @@ module Banzai
     #
     # CommonMark does not allow spaces in the url portion of a link/url.
     # For example, `[example](page slug)` is not valid.
-    # Neither is `![example](test image.jpg)`. However,
+    # Neither is `![example](test image.jpg)`. However, particularly
     # in our wikis, we support (via RedCarpet) this type of link, allowing
     # wiki pages to be easily linked by their title.  This filter adds that functionality.
-    # The intent is for this to only be used in Wikis - in general, we want
-    # to adhere to CommonMark's spec.
+    #
+    # This is a small extension to the CommonMark spec.  If they start allowing
+    # spaces in urls, we could then remove this filter.
     #
     class SpacedLinkFilter < HTML::Pipeline::Filter
       include ActionView::Helpers::TagHelper

lib/banzai/pipeline/gfm_pipeline.rb

@@ -16,6 +16,7 @@ module Banzai
           Filter::MathFilter,
           Filter::ColorFilter,
           Filter::MermaidFilter,
+          Filter::SpacedLinkFilter,
           Filter::VideoLinkFilter,
           Filter::ImageLazyLoadFilter,
           Filter::ImageLinkFilter,

lib/banzai/pipeline/wiki_pipeline.rb

@@ -5,7 +5,6 @@ module Banzai
         @filters ||= begin
           super.insert_after(Filter::TableOfContentsFilter, Filter::GollumTagsFilter)
                .insert_before(Filter::TaskListFilter, Filter::WikiLinkFilter)
-               .insert_before(Filter::VideoLinkFilter, Filter::SpacedLinkFilter)
         end
       end
     end

spec/helpers/issuables_helper_spec.rb

@@ -184,7 +184,7 @@ describe IssuablesHelper do
         issuableRef: "##{issue.iid}",
         markdownPreviewPath: "/#{@project.full_path}/preview_markdown",
         markdownDocsPath: '/help/user/markdown',
-        markdownVersion: 11,
+        markdownVersion: CacheMarkdownField::CACHE_COMMONMARK_VERSION,
         issuableTemplates: [],
         projectPath: @project.path,
         projectNamespace: @project.namespace.path,

spec/lib/banzai/pipeline/gfm_pipeline_spec.rb

@@ -87,4 +87,22 @@ describe Banzai::Pipeline::GfmPipeline do
       end
     end
   end
+
+  describe 'markdown link or image urls having spaces' do
+    let(:project) { create(:project, :public) }
+
+    it 'rewrites links with spaces in url' do
+      markdown = "[Link to Page](page slug)"
+      output = described_class.to_html(markdown, project: project)
+
+      expect(output).to include("href=\"page%20slug\"")
+    end
+
+    it 'rewrites images with spaces in url' do
+      markdown = "![My Image](test image.png)"
+      output = described_class.to_html(markdown, project: project)
+
+      expect(output).to include("src=\"test%20image.png\"")
+    end
+  end
 end